External Gears

Spur & Pinion Gears

Pregrinding straight flute hob cutter with Double R Micro Gear Hob gear hobbing tool for sale
Used for various kinds of high-precision, large volume external gear hobbing, various kinds of shaft involute gear hobbing, high-efficiency, energy-saving, first choice of high-precision, large volume gear processing tool.
All the products are customized according to customers working part drawing, we need know your products drawing first then we make suitable cutters according to the drawing.
The cutters we can make customization for you as below
skiving cutter

The three-row roller slewing bearing consists of three races with its separated upper, lower and radial raceway, to certainly determine the loads of each row of rollers. It can take all kinds of loads simultaneously. It takes the heaviest loading one of the four kinds of products. It has larger axial and radial dimension and stable structure. It is especially used for the large-diameter heavy-duty machinery such as wheel excavator, all terrain cranes, harbor cranes, ladle rotating and big-ton truck-mounted cranes etc.

The double-row ball slewing bearing

The double-row ball slewing bearing has three races. The balls and cages can be directly aligned into the upper or lower raceway. According to force situation, the arrangement is two rows of different diameter balls.
This kind of openly assembling is very handy. The loading angles of upper and lower raceways both are 90o. It can take large axial force, and overturning moment. When the radial force is larger than 0.1 times the axial force, its raceway must be designed specially. The double-row ball slewing bearing features bigger axial and radial dimensions, and stable structure. It is especially used for tower cranes with mid-diameter or bigger, and truck-mounted cranes etc loading machinery.

Precision grinding parts

Slewing bearings are widely used in construction machinery, such as tower cranes, excavators, mobile cranes, truck-mounted concrete pumps, etc. Rothe erde slewing bearing products accompany such machines all over the world, the important things is that with the rapid development of India economy, which lead to a strong demand of various kinds of construction machinery. Rothe erde slewing bearings can totally meet the need.

Any questions about your this kind of slewing bearing, please contact us, we'd like to discuss it with you.

Designation:
1.Standard series KD 210 (single-row ball slewing rings)
Standard bearing type 21, standard number of bolt holes
(1) without gear
(2) with external gear
(3) with internal gear
Standard bearing type 21, double number of bolt holes
(1) without gear
(2) with external gear
(3) with internal gear
Standard bearing type 21, Bearing with limited clearance
(1) without gear
(2) with external gear
(3) with internal gear
Standard bearing type 110, standard bearing
(1) without gear
(2) with external gear
(3) with internal gear
Standard bearing type 110, Bearing with limited clearance
(1) without gear
(2) with external gear
(3) with internal gear
2. Standard series KD 320 (Double-row ball slewing rings)
Bearing with external gear
Bearing with internal gear
3. Standard series KD 600 (Four-point contact ball slewing rings)
Bearing without gear
Bearing with external gear
Bearing with internal gear
Standard bearing type 621, standard bearing
(1) Without gear
(2) With external gear
(3) With internal gear
Standard bearing type 621, Bearing with limited clearance
(1) Without gear
(2) With external gear
(3) With internal gear
Standard bearing type 625, standard bearing
(1) Without gear
(2) With external gear
(3) With internal gear
Standard bearing type 625, Bearing with limited clearance
(1) Without gear
(2) With external gear
(3) With internal gear
4. Standard series RD 700 (Ball and roller slewing rings)
Bearing with external gear
5. Standard series RD 800 (Cross roller slewing rings)
Bearing with external gear
Bearing with internal gear
6. Standard series RD 900 (Triple-row roller slewing rings)
Bearing with external gear
Bearing with internal gear


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